Telephone booth cooling apparatus



-Filed00t. 29, 1940 TELEPHONE BOOTH COOLING APPARATUS June 24, 1941.

wvtwon BK EAKQNTZ a (ae %nm/ d Mull June 24, 1941. F, A, KUNTZ 2,247,028

TELEPHONE BOOTH COOLING APPARATUS Filed Oct. '29, 1940 2 Sheets-Sheet '2 INVENTOR EA. Ku/v r2 ATTORNEY 1 is being used during the makingoi a telephone v Patented June 24, 1941 UNITED STATES IPATE NT OFFICE 2,245,028 TELEPHONE noo'rnooonnvo ArrAnA'rUs Frank A. Knits, Woodhavcn, N. Y.,- assignor to Bell Telephone Laboratories, Incorporated, New York, N. Y., a corporation of New York Application October 29 1940, Serial No. 363.387

SCIa-imaiCLBZ-B) This invention relates 'to temperature-chem ing apparatus for telephone booths.

The object of the invention is to provide means for cooling a telephone booth when the booth .Another feature resides in a modification involving a coin-controlled means for ensuringthe making of some payment by the subscriber for. I

the cooling service.

Another feature raides in an arrangement permitting the user of the telephone booth to maliually (iOl'itlOl operation of the cooling apparatus at wil I 'In accordance with this invention the space above the ceiling of the booth is divided by a partition to form two compartments. An air inlet is provided in the roof at one side of the rear compartment and a grill is provided in the ceiling at the opposite side of the rear compartment. The compartments are lined with soft material for sound absorption. On the upper sideoi the Fig. 3 is an enlarged view, partly in section; of

an upper portion of the telephone booth and showing the mounting arrangement I of the coolins apparatus and a door-controlled switch for controlling the cooling ap atus:

.Flg.4 is aschematic diagram ofpart of the cooling apparatus and showing the modification including the coin box control for the apparatus; and

cooling apparatus and showing an arrangement for manually controlling the cooling apparatus. It is well known that. the temperature within a telephone booth is raised by body heat or an occupant. Whenthe telephone call is of long duration the temperature within the booth is' sometimes raised to such a high level as to be very uncomfortable to the occupanth Opening of the door to relieve this condition is often undesirable and the occupant is subjected to the root is mounted a condenser of the cooling ap- 1 paratus, the other parts of said apparatus being mounted on the under-side of the-root and within said compartments. The compl'ewor is located within the forward'compartmenh-"Ihe evap-' orator coil is located in the rear compartment and inregister with the grill in the-ceiling. A motor-driven fan is provided in register with the evaporator coll-to drive air across the evaporator by a standard roof when the cooling a pparatus is .not required. The roof is cushioned at its points of engagement with the booth structure.

Inthe drawings: a -Fig. l is a view in perspective of a telephone with a small portion broken away to show an inner part of the structure; I

Wig. 2 is a view of an upper portion ofFig. l, but with a larger portion broken away and the roof in an open position to permit viewing of- I some of the cooling apparatus;

booth constructed according to the invention and g0 uncomfortable temperature during most of the time the telephone call is being made.

My invention provides means for lowering the w nerature within. the booth without requiring opening of the booth door, The booth is cooled by means of a cooling unit mounted inan upper portionof the booth and designed to blow cooled air down to the occupant of the booth.

As shown in Figs. 1 and 2, the telephone'booth I has a top portion 2 extending above a ceiling I, the top portion 2 having front, back and,side walls and aroof 5 whichis held againstundue displacement by means of hinges 6 shown in Fig. 3. The top portion 2 in'cooperation with the ceiling l forms 'an upper chamber in the telephone-booth i.- This upper chamber as shown in Fig. 3 is divided into two compartments I and l by means of a wall 0. An opening comprising a grill-work III is provided in the rear; compartment 1, the grill-work it being located in the ceiling 3 0t thebooth'to permit-cooledairtobeblown down to the occupant. Thecoolins apparatus generally indicated by the numeral i I is mounted on the roof 5 in-which'grill-work openings 12 and it are provided. a The cooling apparatus His arrangedpn the roof 5 so that the compressor ll with its p rating motor il willbe located in the front'compartment 8. when the roof I is in normalposition. The condenser l6 ismounted on .top of the roof 5.

' The receiver II, the regulating valve II and the evaporator" coil I! are mounted on the under-side 0f the roof 5 sothat they will be the compartment '|-whenthe roof 5 is in normal position. the evaporator will I! being in resist y with Fig. 5 is a schematic diagram of part of the A switch 22 is mounted on the ceiling 3 to pro- 5 the grill-work loin the ceiling 3. A motor 20 and a fan 2| driven thereby are mounted on the under-surface of the roof 5 to propel air past the evaporator coil l9 and through the grill-work M.

vide a means for controlling operation of the motors i5 and 25,7the'switch being electrically connected to the motors l5 and-2| by means of the respective flexible conductor cords 22 and 24. j The switch 22 may also be used as a control means 10 for the lamp 25 mounted on the ceiling 2 and which is often providedin telephone booths to illuminate the interior .of the booth. It is common practice in telephone booth constructions to control the operation of the lamp 25 by means of the booth door 25, a system 21 of rods and levers being provided between the door 25 and the switch 22. In the. illustration of the present invention shown in Fig. 3 the switch "is used-in the well-known manner as'a controlling means for the lamp and also as above mentioned to control the operation of the motors l5 and 20.- when the booth door 25 is closed the lamp 25 and the motors l5 and 20 are connected through the switch 22 to a commercial sdurce of current sup- 25 ply coming into the switch 22 through the power leads 28. The lamp 25 is,- therefore', operated to illuminate the booth and the cooling apparatus II is brought into operation to supply cooled air to the interior of the booth when the door 26 is 30 closed.

It will beseenby looking at Fig. 3 that when the roof 5 is lowered to the normal-position shown in Fig. 1, the compressor l4 and its operating motor 15 will be in the front compartment 8 and that heatfrom the compressor I4 and the motor l5 will be barred 'from' the rear compartment 1 by the evaporator coil is taken into the compartment I throughthe 55 grill-work opening i2'in the roof 5 and by means I housed.

means of the wall 9. The condenser I5 is located on top of the roof 5 where it can perform its wellknown function much better than would be the 40 case were-it confined in one of the compartments. The only heat-generating. means in the comparte .ment 1 is the motor 25 which is mounted on the under-surface of the roof 5 and directly above amount of heat generated by' the motor 25 is negligible andis not felt in the lower and occupied portion of the boothsinee the fan 2|" circulates the-air about the evaporator coil II. The cooling apparatus II is so arranged that it will supply fresh air of relatively low temperatureto the interior bfthe telephone ,booth and may be set into operation to,perform this function by simply closing the door/25 of the .booth. The fresh air of the fan 2| isdrivenpast the evaporator'coil i9 andndownward through the grill-Worknpening ill in the ceiling 2." When the booth door 25 is, opened the switch 22 will be automatically op- 80 erated to shut off the motors-l5 and 25 and the? lamp 25. The grill-work opening II in provided in the roof .5 to ventilate the front compartment I in which the compressor I5 and motor ii are In Fig. 4 s modifications!- the ,invention is shown in which means are provided to ensure the making of some payment by the user of the booth s before the cooling'apparatus is brought into operation. Itwill be understood that the upper 7 portion of the telephone booth indicated by the dot-dash lines 2! follows the same construction as that shownin Figs; 1, Z and 3 and that the various parts of the cooling apparatus ll arelocated in the same relative positions as shown in these i 9. I Therelatively small 45- brings into'operation the mo figures The modification shown in Pig. 4 is applicable to telephone pay stations in which'a coin collect-box is located Since the constructionv and arrangement of telephone coin collect boxes and the functioning of the limtlls located therein are-so well known, it seems unnecessary toburdenthisspeciiicationwithafulldescription' of the coin collect apparatus;

Iii-this modification when a subscriber deposits acoinllinthecoinbonthecoinflbyitsown weight operates a pivotally supported trigger-2i to releaseacentrally pivoted angular lever 22 operated by means of a spring 33. The lower end of the lever 32 is provided with a button 34 bearingagainstaspringcontact it whenthe com 25 operates the trigger 2| to release the paratus at a central station and is used in a 'weliknown manner to control the retm'ning of thecointothecallingpartyorthedepositingofthe coininacoin collecting receptacle andalsoasa meansior'returning the lever 32 to normal podtion. An understanding of the function and operation of the electromagentic device 31 is disclosed in O; F.-Fbrsberg Patent 14043319, issued November 5: 1912. --In my invention as shown in Fig. 4 the lever 22in addition to performing its normal function of connecting the electron!- netic device'llto groundisalso used to control alocalcircuitthefimctionoiwhichistocontrol' -thecoolingapparatusll. Whentheleverflis moved in a counter-clockwise direction it operates to move contact 52, against contact 25 to close the local circuit 45 comprisinga'source'of current supplyl l andaneleotl'omngneflcswitchfl which upon cnergization closes contacts 52 in a power circuit 44. Thepower circuit 54 extends from a commercial source'of current supply 45 to the 'motor2lofthecoolingapparams Ii. Itisquite obvlousthat thepower supply circuit 45 may also beextendedtothemotor liofthecompremor ll.

Whena-coinisdepositedinthecoinboxinthe booth I the coincollection apparatus tes Q9 8- to signal the central stationjand also closes'the' local circuit to the electromagnetic switch 42. 'l'heswitchfl-closesthepowercircuitfland V 'apparatusllto supplycooledairtothein of boothl. Attheendotthetelephonccallthe ted electromagnetic device l'l V torestm'e theleverfltonormalpd 'Inthisopa'atiim' the centrally pivoted armature 45 is rocked to ceiling to control the operation of said compres-. sor and fan and means under control of the Q comprising in combination a thenpper portion of the manually operated switch 48 whenever it is desired to have the cooling apparatus ll brought into operation. J

As shown in Fig. 3,'the compartments 1 and 8 said chamber into two compartments, a cooling apparatus mounted on said roof and comprising] a compressor, a, condenser, an evaporator coil and a motor-driven fan, said compressor being located within one of said compartments, said condenser being located on top of saidroof and said evaporator coil and fan being located in theother ofsaid compartments in register with the aperture in said ceiling so that air cooled by means of said cooling apparatus may be driven through the aperture in said ceiling to the portion of said booth lying below said chamber.

3. In a telephone booth having side, rear and front walls and a door, an apertured ceiling;supported by said walls, a roof hinged to 'one'of said walls and having a plurality of apertures, said ceiling and said roof being in spacedrelation and forming in cooperation with said walls an upper chamber in said booth, an'upright wall dividing ,.driven fan, said cooling apparatus being suB-' ported on said roof so that the compressor occupies one of said compartments and the evaporator coil and fan occupy the other of said compartments and in register with the. aperture in said. ceiling, a controlswitch mounted on said occupant of said booth to control the operation or said switch.

4'. A coolin I apparatus for a telephone booth two-part chamber in formed by wall members of the booth, an ape'r ceiling ,and an upright wall extending from said ceiling to said roof and dividing said chamber ceiling to saidroof and dividing said chamber into two compartments, a motor-driven compressor supported on said roof and located in one of the compartments in said chamber, an

evaporator coil and a motor-driven fan supported on said roof and located in the other compartment in=said chamber, said coil and fan being said compressor and fan, aswitch in said power supply'leads, a coin controlled apparatus in said booth, a local circuit controlled by said -coincontrolled apparatus, a source of power supply in said local circuit and means insaid local cir-.

cuit to control the operation of said switch.

, 7. A cooling apparatus for a telephone booth comprising in combination a two-part chamber {in the upper portion o'f'the booth cooperatively formed by wall members of the booth, a'n apertured ceiling, an apertured roof spaced from the ceiling and an upright wall extending from said ceiling to' said roof and dividing said chamber are lined with sound absorption material 49 to 5 into two compartments, a motor-driven compresdamp out sound waves produced by the cooling sor supported on said'roof and located in one-- apparatus H. To prevent vibration caused by of the compartments in said chamber, an evap-' the cooling apparatus II from being transmitted orator coil and a motor-driven fan supported on to the booth structure cushion supports are prosaid roof and located in the other compartment vided forthe motors i5 'and 20. The cushion in said chamber, said coil and fan being in regsupport for the motor l5 comprises a mat 50 ister with an aperture in said ceiling, power v of softmaterial disposed between the base of the supply leads extending to the motors of, said motor l5 and the roof 5. The motor is compressor and fan, a. switch in said power mounted on a cushion 51 which is supported by supply leads .and means under control or an 1 means of brackets 52 on the under-side of the 15 occupant of the booth for controlling the operaroof 5. The sound absorption material 49 is extion ofsaid switch. tended over the upper edge,portions of the par- 5. A cooling apparatus for a telephone booth tition wall 9 and the walls 4 to serva as a comprisingincombination atwo-part chamberin cushioning rest for the roof 5 when the roof is' the upper portion of the booth cooperatively in normal position. 0 formed by wall members of the booth, an aper- What is claimed is: I tured ceiling, an aperturedroof spaced from the 1 In av telephone booth having side walls, a. ceiling and an upright wall extending from said rear wall and a front wall, a ceiling and a roof ceiling to said roof and dividing said chamber supported by the walls of the booth and forming into two compartments, 8. motor-driven comtherewith an upper chamber, a cooling apparatus 5 pressor supported on said root and located in mounted on the roof and housed in said chamber, one of the compartments in said chamber, an said roof having an opening formed therein to evaporator coil and amotor-driven fan-supported provide ventilation for said chamber and said on said roof and located in the other compartceiling having an opening formed therein in ment in said chamber, said coil and fan being in register with said cooling apparatus to permit so register with an aperture in said ceiling, powerair cooled by means of said apparatus to pass supply leads extending to the motors of said from said chamber to the lower portion of said; compressor and fan and a door-operated switch booth. I in said power leads to control the, operation of 2. In a telephone booth having side walls, a said compressor and fan. rear wall and a front wall,*an apertured ceiling 6. A cooling apparatus. for a telephone boothsupported by said-walls, an apertured roof hingedv comprising in combination a two-part chamber to one of said walls, said-ceiling and said roof in the upper portion of the booth cooperatively being in spaced relation and forming with said formed by wall members of the booth, an aperwalls an upper chamber in said booth, an upright tured ceiling, an apertured roof spaced from the wall extending across said chamber and dividing 40 ceiling and an upright wall extending from said into two compartments,- a motor-driven compressor supportedon said'roof and located inone of the compartments in said chamber, an evaporator coil and a motor-driven fan suppo t d on said, roof and located in the other compartment in said chamber, said coil andian being in regsupply leads extending to the mot0rs o f,-said compressor and fan,-a switch in said power supply booth cooperatively 7 cuit tofoperatesaidswitch and a manually operiste'r with an aperture in said ceiling, power e'm'swimn in said local circuit to control operation of new electroma netic device.

'8. In a cooling system for a telephone booth having an upper chamber in combination, a

front compartment formed in sail chamber, sound absorbing material lining said t compartments, 2. grill-work opening in said rear compartment in communication with; the portion said boothmed by anoccupant, an ape 'tm-ed e motor-driven oomprwsor mounted on 10 r sald'root and located in said mm compartment,

a cushion between said commence-and said root, on eyaporator coil disposed across said grill-work opening, a motor-driven tan disposed between said roof and said coil, 1 cushion mountandian.

' FRANKLKUR'IZ. 

